How should the administrator relate the two objects?

The administrator at universal containers has been asked to track training classes taken by employees. Employees may take several classes. The employee and class objects have already been created.

How should the administrator relate the two objects?
A . Create a master detail relationship with class as the master object.
B . Create a junction object with both employee and class as master objects
C . Create a lookup relationship with employee as the master object
D . Create a lookup relationship on both the employee and class objects

Answer: B